Fuel and starting valve for internal-combustion engines.



L. V. STOELTZLBN.

FUEL AND STARTING VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED NOV/7,1912- Patented Nov. 24, 1914.

r. n 15 M D e a m .2 t 2 em Q M V e n o M n I t I J S I m I v m a a 3. MW 5% I I L l Wr omw Mr\ W: w I 47/ m E i I I m u E 8 A M A Fig. 2.

Witnesses:

NAI STAS OFFICE.

IEO V. STOEL'IZLEN, OF'ERIE, PENNSYLVANIA, ASSIGNOR T GENERAL ELEOTRIU COMPANY, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented'Novfid, 1914.

Application filed November 7, 1912. Serial No. 729,992.

To all whom it may concern.-

Be it known that I, Lao V. Sronmznnn, a citizen of the United States,.residing.at Erie, in the county of Erie, State of Pennsylvania, have invented certain new and useful Improvements in Fuel and Starting Valves for Internal-Combustion Engines.

The present invention relates to fuel and starting valves for internal combustion engines and in particularfto such valves when used with high-compression engines wherein a charge of relatively pure air is compressed to a temperature'above the igniting temperature of the fuel, after which the fuel in atomized form is injected by means of a blast of air or other suitable means. Inan engine of this character, and espea cially where it is provided with oppositely moving pistons in the same cylinder, it is highly desirable to make as few openings in the cylinder as possible so as to reduce the effects of expansion and contraction, decrease theftrouble from leaky joints and cut down the cost of manufacture. Such an en ine requires a valve for controlling theja 'ssion of fuel and also a valve to control. the admission of air or other gas for starting purposes. I have invented or discovered an arrangement of parts whereby --the fuel and starting valves can be C0111- bined in one, unitary structure thereby avoiding numerous objections to existing arrangements'and at the same time decreasing the cost of manufacture and operation.

11 the accompanying. drawing which illustrates one of the embodiments of my invention, Figure l is a partial vertical section of an internal combustion engine; Fig. 2 is a detail sectional view of the eccentrically supported pivots ofthe valve operating levers; and Fig. 3 is a detail of the starting tank and blast bottle.

3 indicates a cylinder of any suitable construction having the usual water jacket 4. Located inside of the cylinder are oppositely moving pistons 5 and 6 which are connected by suitable rods with the main shaft of the engine. Between the pistons is a combustionspace 7 in which air is compressed by the pistons to a temperature above igniting temperature of the fuel. Fuel is injected into this space by air under pressure subject to the. control of a fuel valve. Compressed air isadnntted the engine for the purpose of starting, saidair the liquid fue being under the control of a valve that surrounds the fuel valve.

j 8 indicates a cylindrical casing thatis common to'the fuel and starting valves. Itis rovided at its inner end with a beveled sur ace that is seated pressure tight in the wall of the cylinder. The casin is also provided with a flange 9 through w iich securing bolts pass into'the cylinder or into a boss formed on the water jacket.

10 indicates the base of a frame that supports and guides the outer end of the fuel valvelfand supports the coiled compresslon s ring 12 which closes said valve.

Re erring first to the fuel valve and its actuating mechanism, said valve is made in the form of a long needle havin a beveled inner end which engages a suita le seat 13 on'the movablemember of the pulverizer.

The valve "is surrounded by a member 14 that'isprovided with an elongated sleeve 15 which extends through a suitable stufiing box 16.. Screw-threaded to the member 14 and suitably centered thereon with passages between is a tubular member 14 which in addition to cooperating with the member 14 to form a pulverlzer and finely-divide for introduction into the combustion space 7 acts as a starting valve as will appear later. The members 14 and '14 are provided with sllitably arranged fuel 'hnd' air carrying passages 17 that' are in communication with the pipe 18 leading from a fuel pump of any suitable construction. The member 14 is provided with one or more radial air ports or passages 19 communicating with the fuel passages of the pulverizer. The object of this arrangement is to permit blast air to blow the fuel into the engine against the pressure therein when the valve 11 is opened. Air for this pur ose is supplied by the pipe 20 leadin rom a suitable tank or other receptac e. This pipe should be large enough in diameter to carry the necessary amount of air for starting purposes since it conveys this air as wel as the blast air. In this manner I am able to make one pipe serve'two purposes. A convenient way to en ply air to this pipe is to unite the socailed blast bottle 21, 3, and the starting tank 22 by a connection, and to this coneither from the starting tank or the blast bottles. 1

The fuel valve is normally held against its seat by the compression spring 12 whose tension can be adjusted by the screw 2d. In order to open the valve at the proper time can be used with engines working on the two, four or other cycle plan, and the speed of the cam shaft should be arranged accordingly. As shown the invention is applied to a two cycle engine, and the fuel valve opens once for every revolution of the main shaft.

Referringnow to the air starting means, I provide the left hand and of the tubular member 14; of the fuel pulverizer with a tapered portion which is arranged to be seated on the beveled face 30 formed on the casing, or housing 8. The end of the member M may be beveled or it may be provided with a removable beveled part 31 which is beveled on one face and is suitably secured to the member 14% at the other. The part 3i with the holes therein also forms a flame plate for directing' the atomized fuel into the combustion space. lit follows that in order to admit air unmixed with fuel to the combustion space for starting purposes it is only necessary to move the member 1% to the right,-said' member being normally held in the position shown by the unbalanced pressures existing in the air chamber 32 and in the combustion space 7.

It is to be noted that the tubular memher 1% haspv relatively small port 29 which, when the "parts are in'norinal position as shown, registers with the fuel port com niunicating with the fuel pipe 18. When the starting valve is opened, however, this port is movedto the right and out of register with the fuel passage so that the supply of fuel is cut off. The casing 8 should have suitable internal projections that engage the tubular member 14: and serve to center it. Between these projections passages are formed to conve air to the engine for starting purposes. I s shown the oil passage terminating at the port 29 passes through one of these projections. As before stated the member 14 is provided with a sleeve 15. This sleeve is flattened on opposite sides-and embracing the sleeve at the flattened portions and engaging the shoulders thus formed is theforked end of a lever These flat faces engaging the fork prevent the pulverizer from turning and keep the oil ports in line. The lower end of the lever 33 is provided with a roller niiasve that is adapted to be moved into and out of engagement with the air starting cam 34 driven by the cam shaft 28. In order to prevent the starting valve from opening accidentally a coiled compression spring 35 is provided and located in the air chamber more or less, by the handle 40 which is held in either of its two positions by the spring Swinging the handle 40 pressed pin 41. in the proper direction will throw the roller of the fuel lever out of the path of the cam 27 and will throwthe lever of the starting valve" into position to coiiperate with the starting caruilt. The engine is then turned to a position at, or about the dead center and air under suitable pressure is admitted to the pipe 20. By reason of the position of the parts as described the lever 33 will have opened the starting valve against the action of the spring 35 and the spring 12, the latter spring being actuated by reason of the factthat the fuel valve and its seat are moved to the right by the lever 33.. After the engine has attained sufficient speed the'handle i1 is quickly returned to its normal position which moves the; air starting lever out of action. a it also moves the fuel valve lever into operative position and thereafter the engine operates in the normal manner.

lit will be seen that my improved mechanism has many advantages in the way of simplicity. @nly one opening has to be made in the cylinder and only one casing is provided which is common to both the fuel and air starting valves. A part of the pulverizer is utilized to form the starting valve and the coiled compression spring of the fuel valve is utilized as a means for prevent ing the opening of the starting valve. lit should be noted that the springs 12 and 35 are so arranged that whereas the former is "compressed both during the starting and normal operating periods the latter is compressed only when the starting valve is open. in other words, the spring 35 holds the starting valve against its seatwhen the fuel valve is in operation.

The concentric arrangement of the two valves renders them relatively easy to manufacture and at the same time the parts are not liable to be distorted and get out of line. Furthermore, by arranging the parts as shown, one within the other, the diameter of the casing 8 need not be much if any larger than-would be necessary if the starting valve had been omitted. The arrangement also has the advantage that the fuel and starting valves together with their casing form a unitary structure which, by removing the retaining bolts, can be easily removed from the enginefor inspection or repair. It will also be seen that the fuel valve can be removed for inspection as readily as though the fuel and starting valve means had not been combined. This is accomplished by unscrewing the cage 42 which is carried by the frame 43. It will be noted that the spring plate 44 is slightly larger in diameter than the hole in said cage so that it cannot pass through it. The advantage of this resides in the fact that the cage and spring can be'removed and replaced without changing the tension of the spring 12.

In accordance with the provisions of the patent statutes, I have described the prinoiple of operation of my invention, together with the apparatus which I now consider to represent the best embodimentthereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means,

What I claim as new and desire to secure by Letters Patent of the United States,

1. The combination with an internal combustion engine of concentrically arranged fuel and starting valves, a casing common thereto, conduits admitting fuel and a starting fluid to the casing, means for actuating the fuel valve, and means for actuating the starting valve. 2. The combination with an internal combustion engine of a member that acts as a fuel pulverizer and also as a starting valve, a casing therefor, means for introducing fuel and a starting fluid to the casing, and means for moving said member when it is desired to admit .the starting fluid to the engine.

3. The combination with an internal combustion engine of a casing that communicates with the cylinder of said engine. a member located therein which is provided with fuel and air passages and forms a valve, a fuel valve seat, a fuel valve that extends into the member and engages the seat, conduits admitting fuel and a starting flu d to thecasing, means for moving the said member to admit the starting fluid to'the engine, and means for actuating the fuel valve for normal operation- .4. The combination with an internal combustion engine of a casing opening into its cylinder and having a valve seat, a member located therein which 1s provided with passa es for fuel and air and a fuel valve seat,

. and said member.

5. In combination, a casing having a valve seat, a hollow member containing fuel and air passages and'having a valve seat, said member forming a valve, 9. spring that normally holds the member against its seat, a fuel valve, a spring for urging the valve toward its. seat, a lever for moving the fuel valve against the action-ofits spring, and a second lever for actuating said member against the action of both springs.

6. In combination,acasing havin a valve seat, a hollow member containing uel and air passa es and having a valve seat, said member orming a valve that is subjected to unbalanced pressures and tends to close,

a flame plate carried by the said member, a lever for moving the member from its seat, a fuel valve that engages the seat in the member, a lever for actuating the fuel valve, eccentrically supported pivots for the levers, means for turning the pivots, and conduits admitting fuel and a starting fluid to the casing.

7. In combination, a casing having a valve seat, a. hollow member having fuel and air passages, said member also forming a valve to engage said seat, a sleeve that is attached to the member, a lever that engages the sleeve for actuating the member for starting purposes, a fuel valve that extends through the sleeve and seats on said member, a lever that actuates the fuel valve, ad justable fulcra for the levers, means within the casing to hold said member against its seat, and a means external of the casing to hold the fuel valve on its seat.

8. The combination with an internal combustion engine, of a pulverizing means, a casing therefor opening into the engine cylinder, a valve to regulate the passage of fuel through said means, an actuator for moving. the pulverizing means bodily to admit fluid to the cylinder for starting purposes, and a device driven by the engine for actuating the valve. p

9. The combination with an internal combustion engine of a casing opening into its cylinder, a pulverizing means located in the "1G. The eembineiuien 'vviele enw'imlaemel ilze em, wmheme ,mevmg the-ether from 1m seat. I I

combustion engine of e cesi ngepeningime its cylinder,- e pulverizin "means located in the casing, e valve With-m fiahe -'pe1verieer controlling lzhe passage of fuel theretlnreugh, e means for opening eml closing the valve for normal eperwliom a starting valve concentric with. the fuel velve, means for meving the starting" valve to efimit flui under pressure to the cylinelevuferremrting purposesc v 11 The cembineizion with em internal combustion engine of e easing eommurlibet mg with the cylinder end'having a valve seat, e' starting ve'lveln the [casing which engages said seefs, seid. seer ling valve also having e velve seefiz, e fuel valve engaging the eeeonel nemedeeel, Mel-meme whereby -geeeve eithher' of- Said valves may-be removed from 12'; The combination with elm-internal eembusnenengme of e cesmg communicating with the cylinder anal halving e valve seal, a fuel valve, e starting velve concentrie with-the fuel valve and hevmg a seal: therefier, said starting valve engaging the valve seal: in the casing and means whereby- 'il)hfilf of seid valves may be moved frem its seat without'moving the other from ES seat.

in Witness Whereef, l have hereunte set my hand. this 4th day of November, 1912. LEG V. STOELTZJLEN, Witnesses:

HERMANN LEMK, @mo F. Peeeeem; 

